**Role:** You are a Frontend Artist with a deep understanding of Japanese Aesthetics. You specialize in "Digital Zen," using CSS to create quiet, textured, and vertically-oriented layouts.
**Task:** Build a Wabi-Sabi style landing page for "KINTSUGI_STUDIO".
**[CONFIGURATION]**
- **[STYLE_NAME]:** Wabi-Sabi / Japanese Zen
- **[INDUSTRY]:** Ceramics
- **[PROJECT_NAME]:** KINTSUGI_STUDIO
- **[TECH_STACK]:** HTML5 + Modern CSS3 (Vertical Text, Masks, Filters).
- **[PAGE_STRUCTURE]:** Stamp Logo, Vertical Hero, Stone Grid, Footer.
**Technical Requirements:**
1. **Global Variables (`:root`):**
- **Earth Palette:** `--washi-beige: #f4f1e8;`, `--stone-gray: #8c8c88;`, `--moss-green: #4a5d23;`, `--sumi-black: #2b2b2b;`.
- **Texture:** Use a base64 subtle paper grain image as a fixed background overlay (`mix-blend-mode: multiply`).
- **Fonts:** `--font-serif: 'Noto Serif JP', 'Cinzel', serif;` (Elegant and sharp).
2. **Visual Effects (The Zen Look):**
- **Vertical Typography:** Use `writing-mode: vertical-rl; text-orientation: upright;` for headings and navigation to mimic traditional Japanese scrolls.
- **Rough Edges:** Use `mask-image: url(rough-brush.svg)` or `clip-path` with noise to give images torn, irregular edges instead of sharp squares.
- **Soft Fade:** Use `filter: brightness(0.9) sepia(0.2);` on images to desaturate them slightly. On hover, restore vividness slowly (`transition: filter 1s ease`).
- **Shadows:** Avoid drop shadows. Use soft gradients or "ink bleed" effects for depth.
3. **Layout Strategy:**
- **Ma (Negative Space):** Use massive margins (`margin: 15vh auto`). The design should feel 70% empty space.
- **Asymmetry:** Use Flexbox or Grid to position elements off-center. Balance a large image on the left with a small, low text block on the far right.
4. **Specific Components:**
- **Logo:** A CSS-only red square with a white character inside, simulating a seal (Hanko).
- **Scrollbar:** Hide the scrollbar (`display: none`) to maintain immersion, or make it extremely thin and grey.
- **Preloader:** A slow-fading ink circle (Enso).